@Bri, I wish there were a reply option because you raise some good questions I'd like to address.
The beast itself is given in the title, a giant crocodile-like creature, and explained throughout the poem itself.
I'm not using the word conscious in a tradition sense. I'm naming it as if it is it's own person, per say, bound by my body, rather than it only being able to exist within my body, see you have to understand that what I'm discussing is the soul to understand why he would laugh at a conscious, see this crocodile has single handedly ripped out my soul, my silver blob that splashes with ripples of pain. He laughs at my conscious because without my soul it is very weak. He finds my own weakness amusing. These lines explain the soul part,
His reddish teeth were sinking
Deeper into my already tattered soul.
The last one's a typo, meant to be slightly.
Thanks for the comment though! ! And yes, snow gets crazy here in Oswego